Motion Unit Vocabulary

Question 1

An amount of space between two things or people.

Answer 1

Distance

Question 2

The change of position in an object.

Answer 2

Displacement

Question 3

The rate of change of a position of an object in any direction.

Answer 3

Speed

Question 4

The total distance traveled by an object divided by the elapsed time to cover that distance.

Answer 4

Average Speed

Question 5

The speed of an object at a specific instant of time.

Answer 5

Instantaneous speed

Question 6

The rate of change of velocity.

Answer 6

Acceleration

Question 7

A vector measurement of the rate and direction of a motion.

Answer 7

Velocity

Question 8

To push or pull an object.

Answer 8

Force

Question 9

The sum of all of the forces acting on an object.

Answer 9

Net Force

Question 10

When two forces that are equal act upon each other causing no motion.

Answer 10

Balanced forces

Question 11

When an object denies to change in its state of motion.

Answer 11

Inertia

Question 12

An object will not change its motion unless a force is acting up on it.

Answer 12

Newton’s second law of motion

Question 13

A force that resists sliding or rolling from one solid object over another solid object.

Answer 13

Friction

Question 14

A force that keeps objects at rest.

Answer 14

Static friction

Question 15

The resistance that is created when two objects slide against each other.

Answer 15

Sliding friction

Question 16

A force that acts in the opposite direction of moving objects.

Answer 16

Air resistance

Question 17

A force that pulls two objects toward each other.

Answer 17

Gravity

Question 18

The amount a thing weighs.

Answer 18

Weight

Question 19

When the motion of an object traversing a circular path.

Answer 19

Centripetal acceleration

Question 20

A force that keeps the objects moving in a circular path.

Answer 20

Centripetal force

Question 21

For every action there is an equal and opposite reaction.

Answer 21

Newton’s third law of motion

Answer 22

Momentum